Hmmmm, I might have just created a new project today. The 396 didn't seem to like the lack of traction today when it suddenly revved up to 6000 rpm's! I now have a slight miss which might be a lost valve. The car currently has a set of oval port heads on it which are not correct, but I have the correct rectangular port heads to go on the car. They are bare so I'll need to get them put together. I need to check some stuff tomorrow to see what's going on. Dam lack of traction!
